Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities:
Net Income	$ 54,248	$ 51,254
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	36,656	33,972
Amortization of debt deferred costs and intangibles, net	709	820
Non-cash lease expense	324	299
Impairment loss	44	74
Equity in earnings of real estate joint ventures and partnerships, net	(27,097)	(5,417)
Gain on sale of property	(13,576)	(17,787)
Distributions of income from real estate joint ventures and partnerships	14,962	3,384
Changes in accrued rent, accrued contract receivables and accounts receivable, net	16,377	20,002
Changes in unamortized lease costs and other assets, net	6,296	(2,736)
Changes in accounts payable, accrued expenses and other liabilities, net	(31,551)	(28,742)
Other, net	6,629	1,257
Net cash provided by operating activities	64,021	56,380
Cash Flows from Investing Activities:
Acquisition of real estate and land, net	(25,506)	(19,699)
Development and capital improvements	(44,404)	(48,476)
Proceeds from sale of property and real estate equity investments, net	45,053	65,543
Real estate joint ventures and partnerships - Investments	(3,176)	(9,094)
Real estate joint ventures and partnerships - Distribution of capital	16,433	554
Proceeds from investments		8,375
Other, net	(161)	1,363
Net cash used in investing activities	(11,761)	(1,434)
Cash Flows from Financing Activities:
Principal payments of debt	(18,749)	(1,576)
Changes in unsecured credit facilities	497,000	(5,000)
Proceeds from issuance of common shares of beneficial interest, net	167	727
Repurchase of common shares of beneficial interest, net	(18,219)	0
Common share dividends paid	(50,935)	(50,816)
Debt issuance and extinguishment costs paid	(2)	(147)
Distributions to noncontrolling interests	(1,301)	(1,572)
Contributions from noncontrolling interests	1,150	326
Other, net	(1,161)	(1,321)
Net cash provided by (used in) financing activities	407,950	(59,379)
Net increase (decrease) in cash, cash equivalents and restricted cash equivalents	460,210	(4,433)
Cash, cash equivalents and restricted cash equivalents at January 1	55,291	76,137
Cash, cash equivalents and restricted cash equivalents at March 31	515,501	71,704
Cash paid for interest (net of amount capitalized of $2,663 and $2,921, respectively)	17,474	18,151
Cash paid for amounts included in operating lease liabilities	$ 1,096	$ 1,015